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フェノールフタレインの構造研究の歩み
http://hdl.handle.net/10069/00040941
http://hdl.handle.net/10069/000409417a66faab-838c-41af-ae00-6dc694bd8ba7
名前 / ファイル | ライセンス | アクション |
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JTE_282_65.pdf (700.3 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-10-12 | |||||
タイトル | ||||||
タイトル | フェノールフタレインの構造研究の歩み | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | acid-base indicator | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | chemical structure | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | lactone | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | triphenylmethane dye | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
野口, 大介
× 野口, 大介 |
|||||
著者別名 | ||||||
姓名 | NOGUCHI, Daisuke | |||||
その他のタイトル | ||||||
その他のタイトル | A historical overview of studies on the structures of phenolphthalein | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Phenolphthalein, one of the well-known acid-base indicators commonly used in chemical education and analytical technology, has various applications in industry, such as in carbonation testing on concrete. Previously, its structural changes in different pH solutions have remain somewhat unclear, and, regrettably, there has been no review article dealing with that. In this historical overview, I describe the details, including its confusion. Phenolphthalein, noted as H2PP, is a diprotic acid that dissociates H+, producing HPP– and PP2–. HPP– has a structure of the lactone-ring and, possibly, ring-opened carboxylate. Around the 1940s, due to a misunderstanding of resonance theory, ring-opened HPP– was commonly accepted; however, after the 1980s, probably to avoid the complexity, the representation of HPP– itself tended to be ignored. By contrast, before the 1980s, PP2– was consistently shown only as a ring-opened form. After that, however, it was understood that some PP2– could exist as a ring-closed structure in a solution and a solid state because of the strength of the lactone ring as compared with the sulfophthalein dyes. Although inclusion compounds, with PP2– with β-cyclodextrin and a metal complex, were reported, their X-ray crystal analyses have not yet been reported. Since the idea of PP2– as a lactone form seems not to have been accepted commonly yet, it would be helpful to compare it with research in clathrate chemistry, where ring-closed PP2– is widely known. | |||||
書誌情報 |
技術・教育研究論文誌 en : Journal of Technology and Education 巻 28, 号 2, p. 65-75, 発行日 2021-12 |
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出版者 | ||||||
出版者 | 技術・教育研究会 | |||||
出版者別言語 | ||||||
The Association of Technology and Education | ||||||
権利 | ||||||
権利情報 | c2021 技術・教育研究会 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
関係URI | ||||||
関連名称 | http://bigjohn.ce.fukui-nct.ac.jp/journal/index.htm | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 技術・教育研究論文誌, 28(2), pp.65-75, 2021 |